5/16" OD Spacers OD = 5/16" (.3125) 7.94mm ID = Inner Diameter L = Length

We have the following spacers in stock, ready to ship today: 

5/16" OD Spacers Scroll down for Length and across for Hole Size.  Select the Part Number for pricing.
Length ↓		Hole Size (Decimal Hole Size)  in millimeters
		For #6 or 3mm Screws   (.141) 3.58mm ↓	For #8 or 4mm Screws   (.170) 4.3mm ↓	For #10 Bolts   (.192) 4.9mm ↓	For 1/4" or 6mm Bolts/Screws (.257) 6.53mm ↓
1/8 (.125) 3.17mm	→		AS31-8-8	AS31-10-8
.129 3.28mm	→			AS31-10-.129
5/32 (.156) 3.96mm	→			AS31-10-10	AS31-14-10
3/16 (.1875) 4.76mm	→		AS31-8-12	AS31-10-12	AS31-14-12
1/4 (.250) 6.35mm	→		AS31-8-16	AS31-10-16	AS31-14-16
5/16 (.3125) 7.92mm	→		AS31-8-20	AS31-10-20	AS31-14-20
3/8 (.375) 9.53mm	→		AS31-8-24	AS31-10-24	AS31-14-24
7/16 (.4375) 11.1mm	→		AS31-8-28	AS31-10-28
15/32 (.469) 11.9mm	→			AS31-10-30
1/2 (.500) 12.7mm	→	AS31-6-32	AS31-8-32	AS31-10-32	AS31-14-32
9/16 (.5625) 14.3mm	→
5/8 (.625) 15.88mm	→	AS31-6-40	AS31-8-40	AS31-10-40
3/4 (.750) 19.05mm	→	AS31-6-48	AS31-8-48	AS31-10-48
7/8 (.875) 22.23mm	→	AS31-6-56	AS31-8-56	AS31-10-56
15/16 (.9375) 23.8mm	→		AS31-8-60	AS31-10-60
1" (1.000) 25.4mm	→	AS31-6-64	AS31-8-64	AS31-10-64
1-1/32 (1.031) 26.2mm	→			AS31-10-66
1-3/32 (1.093) 27.76mm	→		AS31-8-70
1-1/8 (1.125) 28.58mm	→			AS31-10-72
1-1/4 (1.250) 31.75mm	→			AS31-10-80
1-3/8 (1.375) 34.92mm	→			AS31-10-88
1-7/16 (1.4735) 36.5mm	→			AS31-10-92
1-1/2 (1.500) 38.1mm	→			AS31-10-96